vni, D, 1 Jones: The Cigarette Beetle 31 



more or less familiar with the brands which they were to smoke. 

 Each lot contained an equal number of treated and untreated 

 cigars, and each cigar was numbered. A card with numbers cor- 

 responding to those on the cigars accompanied each lot with the 

 request that the smoker use two cigars of the same brand in 

 succession, and give his opinion as to aroma, taste, and burning 

 quality with such additional remarks on the various cigars as 

 he saw fit. The smokers did not know which cigars were treated 

 and which untreated and in no case were the cigars distinguished. 

 Tables XXI to XXVIII give the results obtained from tests 

 by 30 habitual smokers. 



